printf is a shell built-in which does not exec a new process like echo;
I believe this is a reasonable replacement for use of echo -n
printf "%s" ${1}
Alternatively, if you drop the /bin/echo and use bash's built-in echo;
that also will work as it won't exec a new process.
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https://bugs.launchpad.net/bugs/1835114
Title:
[MIR] ec2-instance-connect
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